Texas Instruments TITANIUM TI-89 - Manual (Page 263)

Symbolic Manipulation 263
Finding the Zeros of an Expression Finding the Zeros of an Expression Finding the Zeros of an Expression Finding the Zeros of an Expression
Use the zeros ( „
4 ) function.
zeros(expression , var)
Use the expression x
sin(x) + cos(x) .
Find the zeros with respect to x in the interval
0  x and x  3 .
Note: For ‚ or , type 8 Ã or 8 Â.You can
also use 2 I 8 or 2 G 2 to select
them from a menu.
Use the “ with ”
operator to specify
the interval.